Chevy GMC Buick Pontiac Olds Alternator 66-78 Amp - 1AEAL00048

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Vehicle Fit

  • 78 Ampere Alternator

Fit guaranteed

  • This NEW alternator will install just as your original does.
  • Designed to fit your original engine brackets.
  • Your existing wiring harness will attach with no modification.


    • This Alternator will give you trouble free performance
    • Each unit is individually tested.
      • You'll receive a report with your alternator that shows its performance.
  • New vs. Remanufactured
    • Nothing is more frustrating than pulling off the side of the road with a failed alternator. That is why we carry only new alternators which are 94% more reliable than remanufactured alternators.
    • Our Alternators are 100% NEW. Castings, pulleys, fans, hardware, internal parts, etc. are all new.
    • No Core Charge; No hassling with an old core
This replacement 78 Amp Alternator is just what you need to get your vehicle in good working order again. If your battery is no longer being charged completely, or at all, this Alternator may be the solution for you.

Ensure fit

  • Please verify the picture matches the alternator in your vehicle. If you think there is a difference please call us to toll free 888-844-3393 to verify fit.
  • For some vehicles we provide the VIN engine code to match. Match the 8th digit (5th digit on 1979 and earlier) of your VIN number to the VIN code in the title.
  • Examples
  • 1975 Buick Apollo Alternator 250ci (5th VIN Digit D) With A/C 63 Amp
    If you have a 1975 Buick Apollo you want to make sure the 5th digit of your VIN is D and you have Air Conditioning
    1973 Buick Centurion Alternator 455ci With A/C 63 Amp
    This alternator will fit a '73 Centurion with a 455 cubic inch engine and Air Conditioning.
  • Your vehicles VIN number can be found in the lower left corner of the windshield or on your registration.

Our electrical and electronic parts are subject to strict quality testing.

Parts cannot be returned after they have been installed. Contact us with any questions before installing the parts.

Item Condition: New

Lifetime Warranty

This item is backed by our limited lifetime warranty. In the event this item should fail due to manufacturing defects during intended use, we will replace the part free of charge.

  1. step : Disconnecting the Battery (0:54)
    • Disconnect the negative battery cable with an 8mm wrench
  2. step : Removing the Alternator (1:12)
    • Disconnect the alternator wiring harnesses
    • Pull back the battery lead boot
    • Remove the 10mm nut behind the battery lead boot
    • Pull off the battery lead
    • Loosen the 15mm bolt from the front of the alternator
    • Loosen the 14mm bolt on the front of the alternator
    • Pull the alternator toward the center of the vehicle
    • Pull the serpentine belt off the alternator pulley
    • Remove the 15mm bolt
    • Remove the 14mm bolt
  3. step : Preparing the New Alternator (2:59)
    • Remove the bolt that holds the bracket to the old alternator
    • Transfer the bracket to the new alternator
    • Insert the 15mm bolt into the new alternator
  4. step : Installing the New Alternator (3:15)
    • Push the alternator into place
    • Start the 14mm bolt by hand
    • Start the 15mm bolt by hand
    • Push the alternator toward the center of the vehicle
    • Pull the serpentine belt on to the alternator pulley
    • Use a pry bar to hold the alternator in place
    • Tighten the 14mm bolt
    • Tighten the 15mm bolt
    • Tighten the 15mm bolt into the bracket
    • Connect the alternator wiring harness
    • Connect the battery lead to the alternator
    • Fasten the 10mm bolt on to the alternator
    • Put on the battery lead boot
  5. step : Reconnecting the Battery (6:52)
    • Reconnect the negative battery cable
  6. step : Checking the Serpentine Belt (6:04)
    • Start the vehicle
    • Run the engine briefly
    • Check the tension of ther serpentine belt
    • If the belt is loose, tighten the alternator bolts

Tools needed for replacement:

    Ratchets & Related

  • Ratchet
  • Socket Extensions

  • Screwdrivers & Related

  • Pry Bar

  • Sockets - Metric

  • 8mm Socket
  • 15mm Socket
  • 10mm Socket
  • 14mm Socket

  • Wrenches - Metric

  • 8mm Wrench

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Year Make Model Description
1983Buick Electra Buick Electra Alternator 66-78 Amp
1983-1985Buick LeSabre Buick LeSabre Alternator 66-78 Amp
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1983-1984Buick Skylark Buick Skylark Alternator 66-78 Amp
1985-1986Chevy Camaro Chevy Camaro Alternator 66-78 Amp
1983-1985Chevy Caprice Chevy Caprice Alternator 66-78 Amp
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1983-1984Chevy Citation Chevy Citation Alternator 66-78 Amp
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1983-1985Chevy Impala Chevy Impala Alternator 66-78 Amp
1983Chevy Malibu Chevy Malibu Alternator 66-78 Amp
1983Chevy Monte Carlo Chevy Monte Carlo Alternator 66-78 Amp
1983GMC Caballero GMC Caballero Alternator 66-78 Amp
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1983-1984Oldsmobile Omega Olds Omega Alternator 66-78 Amp
1983Pontiac Bonneville Pontiac Bonneville Alternator 66-78 Amp
1985-1986Pontiac Firebird Pontiac Firebird Alternator 66-78 Amp
1983Pontiac Grand Prix Pontiac Grand Prix Alternator 66-78 Amp
1983Pontiac LeMans Pontiac LeMans Alternator 66-78 Amp
1984-1985Pontiac Parisienne Pontiac Parisienne Alternator 66-78 Amp
1983-1984Pontiac Phoenix Pontiac Phoenix Alternator 66-78 Amp
Part #: 1AEAL00048

Out of Stock